来自四重奏DNA材料的甲基化参考数据集用于对表观基因组测序的基准测试
Xiaorou Guo1, Qingwang Chen1, Yuanfeng Zhang2,3,4
1State Key Laboratory of Genetics and Development of Complex Phenotypes, School of Life Sciences, Human Phenome Institute and Shanghai Cancer Center, Fudan University, Shanghai, China.
Nature communications
|October 16, 2025
概括
这项研究使用经过认证的DNA创建了定量甲基化参考数据集. 这些资源使表观基因组测序技术的强有力的质量控制成为可能,改善了临床翻译.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 缺乏定量甲基化参考数据集和可重现性评估,阻碍了全表观基因组测序的临床使用.
- 标准化质量控制对于可靠的表观基因组数据至关重要.
研究的目的:
- 使用经过认证的DNA材料生成定量甲基化参考数据集.
- 评估主流表观基因组测序协议的跨实验室可重复性.
- 建立用于对表观基因组技术进行基准测试的基本标准.
主要方法:
- 通过全基因组二硫酸盐测序,酶性甲基测序和TET辅助的胺酸测序生成了108个表观基因组测序数据集.
- 使用经过认证的四方DNA参考材料,在多个实验室进行三重复制.
- 员工共识投票构建全基因组定量甲基化参考数据集.
主要成果:
- 在所有测试的协议中观察到链特异性甲基化偏差.
- 实验室之间在定量甲基化水平上有很高的一致性 (平均PCC=0.96),但检测一致性较低 (平均贾卡德指数=0.36).
- 确定了技术参数 (深度,覆盖面,链一致性) 和质量指标 (召回,PCC,RMSE) 之间的强烈相关性.
结论:
- 建立了用于基因组技术和分析管道的基准标准.
- 实现了针对表观基因组研究和临床应用的强有力的标准化质量控制.
- 通过可靠的参考数据集,促进了全表观基因组测序技术的临床翻译.
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